Radio Navi unit replacement - need advise

[Kisu_san]

my car

BMW X5 E53 2002 3.0i Auto with factory Navi unit with DSP (BM 54) in boot.

I am purchasing some thing similar to
Dash 7" Car DVD Player GPS Radio Stereo BT Touch Navi o for BMW X5 E53 2000-2007 | eBay

It says, I it required to run power cable from front display unit to DSP in boot with 6 meter harness.

I am struggling to find instructions / Pictures how to run this harness from front to back. I found many youtube video showing installation but not how to run the cable. I mean which panels need to be removed. Some say can run the wire under the carpet but I am not sure how.


Q1. I am sure somebody might have done this. Can you please share instructions or pictures.